Top-prop nut



N0 Model.)

B. ROTHLISBERGER.

TOP PROP NUT.

Patented Mar. 10, 1885.

, Unirnn firarns PATENT l l lQEO ERNESTE ROTHLISBERGER, OF CINCINNATI,OHIO.

TOP-PROP NUT.

SPECIFICATION forming part of Letters Patent No. 313,772, dated March10, 1885.

Application filed May 29, 1884. No model.)

T 0 all whom it may concern.-

Be it known that I, Eaunsrn ROTHLISBER- GER, a citizen of the UnitedStates, and a resident of Cincinnati, in the county of Hamilton andState of Ohio, have invented certain new and useful Improvements inCarriage-Top Bolt-Heads, of which the following is a specification.

My inventionrelates to the manufacture of bolt-heads adapted to be usedfor carriagetops and other similar purposes.

The object of my invention is to furnish a cheap ornamentalleather-finished bolt-11ead, which may be screw-threaded and used as aprop-nut, or may be permanently attached to the shank of the bolt, asdesired, all of which will be fully set forth in the description of theaccompanying drawings, in whic11- Figure l-is a top plan view of myimproved bolt-head. Fig. 2 is a vertical cross'section showing the samescrew-threaded. Fig. 3 is a vertical cross-section of the molding. Fig.4. is a plan view of the finished or ornamental portion of the head.Fig. 5 represents a metallic stiffening-blank. Fig. 6 shows the boltheadpermanently attached to the shank.

A represents a metallic shank,which is provided with a circular concavehead, a.

B represents a molding, which is struck up from an annular sheet-metalblank, first into the form shown in Fig. 3.

b represents the horizontal portion of the molding, which covers theouter peripheral edge of the bolt-head.

0 represents a vertical flange.

0 represents a circular piece of finished leather or other fibrousmaterial of suflicient size to fit within the vertical flange c.

D represents a concave metallic blank,whicl1 is used as a stiffening tosupport and hold the leather in its position. After the blank D Th isstiffening metallic blank D is placed against the leather. This is madeconcave or cupshaped, so that its outer edge will rest uponthe upperside of the shank-head a, and the concave portion will hold the leatherfirmly in the desired form. placed within the molding-flange c, whichflange is then spun or turned down upon the under side of the flange aof the head of the shank, the molding b c firmly holding the parts A B OD together to form the-bolthead.

When this bolt-head is desired to be used as a nut, the shank is piercedand tapped with screwthreads E to engage with the threads of the bolt towhich the head is to be applied.

When this bolt-head is not designed to be used as a tap, the shank A ismade solid, as

shown in Fig. 6, in which form it is used asa bolt or rivet. The moldingb may have imitat/ion stitches struck up upon its inner pe-. riphery, soas to imitate leather-stitching, as

shown in Fig. 1.

I claim- 1. A bolt-head for carriage-tops combining in its structure ashank, A, having the head a, the disk D, resting on the head, thecovering Oupon the disk, and the molding B,overlying the edge of thecovering and secured to the head, substantially as described.

2. A bolt-head for carriagetops consisting of the following elements, towit: the shank A, having the circular head a, the ooncavoconvex diskD,resting at its edge on the head, the flexible covering O on the disk,and the molding B, having the flanges b overlying the covering and theflange c underlying the head, substantially as described.

In testimony whereof I have hereunto set my hand.

EBNESTE RO'IHLISBERGER.

Witnesses:

Jos. W. Suns, M. E. MILLIKAN.

The head of shank a is U

